Stuart Schaffert:
If it's not a halfwave antenna intended for mounting on a fiberglass boat or car all that is needed is the addition of a groundplane made up of four appropriately sized radials. For 2 meters 19.5" would be about right.

73.StuartWB6RXG

Dale Hunt:
One of my mobile antennas came with a kit that included a NMO base that straps on a mastand a radial kit. But if you have a 5/8 wave whip, you'll want to use horizontal radials rather than ones that slope downwards (and which radiate out of phase with the mainpart of the antenna.)

If it is a mag mount, just stick it on top of the fridge, a filing cabinet, metal heat duct,cookie sheet or old washtub.

:
Quote from: KC8YKB on January 19, 2012, 11:37:38 AM

Has anyone converted a 2 meter mobile antenna to a base antenna?

Stick it on top of the outside part of your air conditioner! A 20 inch pizza pie plate can also do the trick.

KC8Y:
In my 15-yr involvement in 2 meter FM:use only a HUSTLER Collinear High Gain Mobile Antenna CG-144 with the HUSTLER MKR-2 Radial Base Kit; as a baseantenna. It's about 15-feet above the ground. Works super.